Fork mods

From what I've read here, the only fork mod that people seem to be very happy with is the Landsdowne. Now that Landsdowne is out of business, is there anything similar on the market or similarly effective?

Ed

http://cosentinoengineering.com/index_files/Page450.htm

cosentino-damping-cartridges-t14148.html

Thank you Gortnipper. Those certainly look like the best available and I now see they have had excellent reviews.

Peter Williams is making a set, not sure if in production yet.
Peter Williams Motorcycles.com

I have a set of Lansdowne fork inserts, they work well, probably as good as anything for a road bike, the price was great, anything comparable now is at least twice the price!...we need someone to reverse engineer these for a reasonable amount, glad I got some when I could!...the PW version looks similar, but I cannot justify spending that much for my other bike........